1687509055 has 8 divisors (see below), whose sum is σ = 2035188000. Its totient is φ = 1343222496.

The previous prime is 1687509053. The next prime is 1687509059. The reversal of 1687509055 is 5509057861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1687509055 - 2¹ = 1687509053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1687508996 and 1687509014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1687509053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847000 + ... + 848989.

It is an arithmetic number, because the mean of its divisors is an integer number (254398500).

Almost surely, 2^1687509055 is an apocalyptic number.

1687509055 is a deficient number, since it is larger than the sum of its proper divisors (347678945).

1687509055 is a wasteful number, since it uses less digits than its factorization.

1687509055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696193.

The product of its (nonzero) digits is 378000, while the sum is 46.

The square root of 1687509055 is about 41079.3020266898. The cubic root of 1687509055 is about 1190.5529184415.

It can be divided in two parts, 16875090 and 55, that added together give a triangular number (16875145 = T₅₈₀₉).

The spelling of 1687509055 in words is "one billion, six hundred eighty-seven million, five hundred nine thousand, fifty-five".